Advice for Contemporary French Philosophers

Joseph Joubert, The Notebooks of Joseph Joubert, p. 26:

When a thought gives birth to obscurity, it must be rejected, renounced, abandoned.

Would that contemporary French scribblers would heed this rule penned by a Frenchman in 1796. But they may not be capable of heeding it since

Clarity of mind is not given in all centuries. (28)